As someone deeply interested in the ISO C and C++ standards, I am intrigued by the fact that programming language standards for ISO/IEC 23270:2006 C# and ISO/IEC 16262:2011 ECMAScript can be accessed publicly on the ISO website. Meanwhile, standards for C and C++, among possibly other languages, remain unavailable. What criteria are used to determine which programming language standards are made publicly available and which ones are not? How are these decisions rationalized?
PS: The inquiry on ISO/IEC Website and Charging for C and C++ Standards raises the question of why the C/C++ standards come with a fee, but fails to address why other standards do not incur charges.